Veil in the context of "Christian head covering"

Investiture (from the Latin preposition in and verb vestire, "dress" from vestis "robe") is a formal installation ceremony that a person undergoes, often to mark or celebrate their taking up membership in—or leadership of—a Christian religious institute, an order of chivalry (which may include knighthoods, damehoods, or other honours), or a governmental leadership role or office.

In an investiture, a person may receive (or be 'invested with') an outward symbol or marker of their membership, such as a religious habit (as with monastic communities), an ecclesiastical decoration (as with christian chivalric orders), a badge or medal (as with an honours investiture), a particular coloured veil (as with religious orders of women), or a scapular (as with confraternities). A person assuming political or clerical office (eg, as a bishop) may be given the symbols of authority or particular (usually historical) regalia of that office; these items often come to be regarded as manifestations of the polity or the religious order or institution itself, and are passed down from office-holder to their successor. Investiture can include formal dress and adornment, such as a robe of state, crown, or headdress; it often takes place in a particular space (a church or a parliament building etc) and other regalia such as a staff, sword, throne or sceptre may also play a role. An investiture is also often part of, or is similar to, a coronation rite or an episcopal enthronement.

A territorial abbey (or territorial abbacy) is a particular church of the Catholic Church comprising defined territory which is not part of a diocese but surrounds an abbey or monastery whose abbot or superior functions as ordinary for all Catholics and parishes in the territory. Such an abbot is called a territorial abbot or abbot nullius diœceseos (abbreviated abbot nullius and Latin for "abbot of no diocese"). A territorial abbot thus differs from an ordinary abbot, who exercises authority only within the monastery's walls or to monks or canons who have taken their vows there. A territorial abbot is equivalent to a diocesan bishop in Catholic canon law.

While most belong to the Latin Church, and usually to the Benedictine or Cistercian Orders, there is one Eastern Catholic territorial abbey: the Italo-Albanian Greek Catholic Abbey of Grottaferrata. The closest equivalent in the Eastern Orthodox Church would be a stauropegion (e.g. most famously, Mount Athos).

A stephane (ancient Greek στέφανος, from στέφω (stéphō, “I encircle”), Lat. Stephanus = wreath, decorative wreath worn on the head; crown) was a decorative headband or circlet made of metal, often seen on depictions of high-status ancient Roman and Greek women, as well as goddesses. The stephane often consisted of a metal arc that was higher in the center than along the sides. It was set atop a woman's hair, with or without a veil. It resembled a crown.

Many ancient Greek and Roman coins show a queen's portrait on the obverse, with her wearing a veil with a stephane.

An apostolnik or epimandylion is an item of clerical clothing worn by Eastern Orthodox and Eastern Catholic nuns. It is a cloth veil that covers the head, neck, and shoulders similar to a khimār form of hijab worn by Muslim women, usually black, but sometimes white. It is sometimes worn with a skufia.

The nun typically receives the apostolnik when she becomes a novitiate. While it is usually replaced with the epanokalimavkion when the nun becomes a rassophor, many nuns will continue to wear the apostolnik for the sake of convenience, much as a monk will continue to wear a skufia instead of a klobuk when not attending the Divine Liturgy.

Acousmatic sound is sound that is heard without an originating cause being seen. The word acousmatic, from the French acousmatique, is derived from the Greek word akousmatikoi (ἀκουσματικοί), which referred to probationary pupils of the philosopher Pythagoras who were required to sit in absolute silence while they listened to him deliver his lecture from behind a veil or screen to make them better concentrate on his teachings. The term acousmatique was first used by the French composer and pioneer of musique concrète Pierre Schaeffer. In acousmatic art one hears sound from behind a "veil" of loudspeakers, the source cause remaining unseen. More generally, any sound, whether it is natural or manipulated, may be described as acousmatic if the cause of the sound remains unseen. The term has also been used by the French writer and composer Michel Chion in reference to the use of off-screen sound in film. More recently, in the article Space-form and the acousmatic image (2007), composer and academic Denis Smalley has expanded on some of Schaeffers' acousmatic concepts.Since the 2000s, the term acousmatic has been used, notably in North America to refer to fixed media composition and pieces.